Possible Means of Overcoming Sedimentation by Moss Sperm Cells
Journal Title: Modern Approaches in Oceanography and Petrochemical Sciences - Year 2019, Vol 2, Issue 4
Abstract
A model for overcoming the gravity by moss sperm cells is proposed here. It is based on the assuming that the tip of constantly coiled sperm cell slips on surface of moss tissue, to which the cell is pressed by tensile strength of water. This tip and the cell mass center don’t coincide. Therefore, there appears a torque expressing gravitaxis of physical nature. In puddles the cells can successfully overcome the gravity detecting thermal fluctuations of their velocities, which expresses gravikinesis of physical nature. It can considerably improve fertilization of mosses. Bryophytes are the only plants; which sperm cells must move on considerable distances (it may be 10 or even 100 centimeters) to fuse with oocytes. When distanced from archegonia secreting special attractants, the spermatozoa move diffusively and thus the speed of their translocation is very low. Therefore, bryophytes have different means to increase the speed of their translocation.
Authors and Affiliations
Oleh Pundyak
Keywords
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- EP ID EP629113
- DOI 10.32474/MAOPS.2019.02.000142
- Views 55
- Downloads 0
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